Fisher Index
The Fisher index can be defined as the geometric mean between the Paasche index and Laspeyres index.
![\[ I_Fisher=\sqrt{I_Paasche x I_Laspeyres} \]](http://informeeconomico.com.br/wp-content/ql-cache/quicklatex.com-9c17755b841c48114087eae6a3a74d3e_l3.png "Rendered by QuickLaTeX.com")
where:
IFisher = Fisher index
IPaasche= Paasche index
ILaspeyres = Laspeyres index
The Fisher index can be defined as the geometric mean between the Paasche index and Laspeyres index.
where:
IFisher = Fisher index
IPaasche= Paasche index
ILaspeyres = Laspeyres index
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